4 Months After a Hair Transplant

Michael Seutin Written by Michael Seutin, founder — former nurse, researching transplant pricing.

Published · every medical statement links to its source.

Four months after a hair transplant, new hair is usually just beginning to show. The NHS says new hair will usually start to appear after about 4 months, and the full result should be seen after 10 to 18 months[1]. The ISHRS says hairs grow about 1 cm a month[2], so hairs that started recently are still short. Thin coverage at month 4 is expected; it is an early checkpoint, not a verdict.

What month 4 usually looks like

The resting phase is ending. The ISHRS patient brochure says the roots lie dormant for 10 to 14 weeks before the new hairs begin to grow[5], and a 2008 review says new hairs start growing about three months after the procedure[3]. By month 4 the earliest of them may have had a few weeks to grow. The ISHRS says the result takes several months at a minimum, and often a year or more[2].

Why it can still look thin

What the studies show near month 4

No study we read reports a figure for month 4. The nearest is a university hospital study of 11 men that counted grafts in small tattooed test areas: survival by graft-unit count was 57.4% at 3 months, and survival by hair count was 92.0% at 6 months[4]. It counted units at 3 months and total hairs at 6, in a small group, so it shows the direction of travel in that study, not what to expect on your own scalp.

Numbness and bumps

The ISHRS patient brochure says numbness in the donor or recipient area usually disappears within 2 to 8 months of surgery[5]. Pimple-like bumps should be settling: in one surgeon's record of 2,896 patients in India, sterile folliculitis was seen in 203 and lasted from 3 weeks to 3 months[7]. The NHS says to contact the clinic as soon as possible about severe pain or any unexpected symptoms[1].

When to judge, and what to ask

A 2008 review says it usually takes six to nine months to appreciate the result of a hair transplant[3]. A 2026 review names perceived low density and delayed regrowth in the first months among the main causes of dissatisfaction, and says touch-up procedures should only be considered once final growth is reached, typically around 12 months[6]. Regrowth timing varies from person to person. If yours worries you, send your surgeon photos and ask what they expected to see by now for your case.

What grafts cost where clinics publish a rate

Only 2 of the clinics we track publish a per-graft rate on their own site, too few for a middle band, and they run from $1.90 to $3.92 per graft. Read from our directory each time this page loads. We never divide a package price into a per-graft rate to fill the gap.

Estimate your grafts → Cost calculator

Sources

Primary sources only: the NHS, the FCDO, the ISHRS and peer-reviewed papers on PubMed and PubMed Central. Each was opened and read on the date shown.

  1. Hair transplant — NHS. Read 2026-10-23.
  2. FUE Hair Transplant: Benefits, Process & Recovery — ISHRS. Read 2026-10-23.
  3. Hair transplantation surgery (Khanna, Indian J Plast Surg, 2008) — PubMed Central. Read 2026-10-23.
  4. Evaluation of survival rate after follicular unit transplantation using the KNU implanter (Lee et al., Dermatol Surg, 2001) — PubMed. Read 2026-10-23.
  5. Medical and Surgical Options to Restore and Maintain Scalp Hair (patient brochure, 2005) — ISHRS. Read 2026-10-23.
  6. Complications in follicular unit excision hair transplantation: current evidence and practical approaches (Romera de Blas et al., Front Med, 2026) — PubMed Central. Read 2026-10-23.
  7. Complications of Hair Transplant Procedures: Causes and Management (Garg & Garg, Indian J Plast Surg, 2021) — PubMed Central. Read 2026-10-23.
  8. Hair Grooming & Styling After Hair Restoration Surgery — ISHRS. Read 2026-10-23.

Read next

3 months after a hair transplant → 6 months after a hair transplant → Hair transplant shock loss →

← The full hair transplant recovery timeline, day by day to month 12

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Questions, answered

How much growth is normal 4 months after a hair transplant?

Usually not much yet. The NHS says new hair will usually start to appear after about 4 months, and the ISHRS says hairs grow about 1 cm a month. No study we read gives a month-4 percentage, and timing varies from person to person.

Why does my hair transplant look thin at 4 months?

Because the new hairs are short and still maturing. The ISHRS says volume increases as transplanted hair grows longer and thicker, and a 2026 review says regrowth of native hair lost to shock loss usually begins only around 3 months.

When will I see the final result of my hair transplant?

The NHS says the full result should be seen after 10 to 18 months. A 2008 review says it usually takes six to nine months to appreciate the result.